#13 fixed a bug in asyncUpdate
some minor code formatting changes
delete redundant example code files
#20 add super call after base class (ErikGrimes/polymer_elements#63) has it's private method changed to public
#24 add on-click handler because on-tap is not yet fired in Dart
The app-element is redundant in this example I think.
I forgot to pull latest changes.
When I tried to push I saw your changes. I hope you don't mind that I removed the app-element.


Merge branch 'master' of github.com:ErikGrimes/polymer_ui_elements

Conflicts:
	example/polymer_ui_arrow.html
	example/src/polymer_ui_arrow/app_element.dart
	example/src/polymer_ui_arrow/app_element.html
	lib/polymer_ui_arrow.html
	lib/polymer_ui_arrow/polymer_ui_arrow.dart